ETSI
Representing members from 54 countries, ETSI promotes worldwide standardization in telecommunications, broadcasting and information technology. The work of ETSI is closely aligned with the market needs of network operators, manufacturers, service providers, research institutions, and end users.
ETSI TS 100 531
Digital cellular telecommunications system (Phase 2+) (GSM); Discontinuous Reception (DRX) in the GS
$7.00 $14.00
ETSI TS 100 532
Digital cellular telecommunications system (Phase 2+) (GSM); Support of Dual Tone Multi-Frequency si
$7.00 $14.00
ETSI TS 100 533
Digital cellular telecommunications system (Phase 2+) (GSM); Technical realization of Operator Deter
$11.00 $21.51
ETSI TS 100 539
Digital cellular telecommunications system (Phase 2+); Technical realization of facsimile group 3 no
$23.00 $45.00
ETSI TS 100 541
Digital cellular telecommunications system (Phase 2+) (GSM); Routeing of calls to/from Public Data N
$11.00 $21.51
ETSI TS 100 542
Digital cellular telecommunications system (Phase 2+) (GSM); Line identification supplementary servi
$21.00 $41.00
ETSI TS 100 543
Digital cellular telecommunications system (Phase 2+) (GSM); Call Forwarding (CF) supplementary serv
$32.00 $63.00
ETSI TS 100 544
Digital cellular telecommunications system (Phase 2+) (GSM); Call Waiting (CW) and Call Hold (HOLD)
$19.00 $37.00
ETSI TS 100 545
Digital cellular telecommunications system (Phase 2+) (GSM); Multi Party (MPTY) supplementary servic
$13.00 $25.50
ETSI TS 100 546
Digital cellular telecommunications system (Phase 2+) (GSM); Closed User Group (CUG) supplementary s
$13.00 $25.50
ETSI TS 100 548
Digital cellular telecommunications system (Phase 2+) (GSM); Call Barring (CB) supplementary service
$17.00 $33.00
ETSI TS 100 549
Digital cellular telecommunications system (Phase 2+) (GSM); Unstructured Supplementary Service Data
$17.00 $33.00
ETSI TS 100 550
Digital cellular telecommunications system (Phase 2+) (GSM); Mobile Station - Base Station System (M
$9.00 $17.50
ETSI TS 100 551
Digital cellular telecommunications system (Phase 2+) (GSM); GSM Public Land Mobile Network (PLMN) a
$9.00 $17.50
ETSI TS 100 552
Digital cellular telecommunications system (Phase 2+); Mobile Station - Base Station System (MS - BS
$9.00 $17.50